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I have preserved the somewhat awkward original phrasing. The source does not provide answers, so I have calculated them myself. If you have different answers, please show your working in comments.

A man bought a farm for $2400 and sold it for $2700. What per cent did he gain?

A man sold a watch for $180, and lost 16⅔%. What was the cost of the watch?

A school enrolled 120 pupils and the number of boys was two thirds of the number of girls. How many of each sex were enrolled?

How long a rope is required to reach from the top of a building 40 ft. high, to the ground 30 ft. from the base of the building?

Find the cost at 12½ cents per sq yd of kalsomining the walls of a room 20 ft long, 16 ft wide and 9 ft high, minus 1 door 8 ft by 4 ft 6 in and 2 windows 5 ft by 3 ft 6 in each.

Kalsomine is a type of whitewash. Round your answer to the nearest cent.

How many steps 2 ft. 4 in. each will a man take in walking 2¼ miles?

There are 5,280 ft. in a mile. I have rounded the answer to the nearest whole number.

At $1.62½ a cord, what will be the cost of a pile of wood 24 ft. long, 4 ft. wide and 6 ft. 3 in. high?

A cord is 128 cubic feet. Round your answer to the nearest cent.